KI

Kazunori Ishizuka

PE Pentax: 31 patents #5 of 396Top 2%
HO Hoya: 15 patents #58 of 1,290Top 5%
PE Pentax: 12 patents #157 of 761Top 25%
FL Fujitsu Hitachi Plasma Display Limited: 4 patents #50 of 166Top 35%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
HC Hitachi Consumer Electronics Co.: 1 patents #206 of 447Top 50%
HC Hitachi Plasma Patent Licensing Co.: 1 patents #21 of 52Top 45%
AK Asahi Kogaku Kabushiki Kaisha: 1 patents #9 of 73Top 15%
OI Olympus Imaging: 1 patents #211 of 341Top 65%
FC Fuji Photo Optical Co.: 1 patents #305 of 509Top 60%
Overall (All Time): #33,047 of 4,157,543Top 1%
66
Patents All Time

Issued Patents All Time

Showing 51–66 of 66 patents

Patent #TitleCo-InventorsDate
6522482 Zoom lens barrel assembly Hiroshi Nomura, Takamitsu Sasaki, Maiko Takashima 2003-02-18
6522481 Cam structure for zoom lens barrel assembly Hiroshi Nomura, Takamitsu Sasaki, Maiko Takashima 2003-02-18
6522478 Multi-stage-extension zoom lens barrel assembly Hiroshi Nomura, Takamitsu Sasaki, Maiko Takashima 2003-02-18
6392828 Zoom lens barrel Hiroshi Nomura, Nobuaki Aoki, Takamitsu Sasaki 2002-05-21
6369956 Zoom lens barrel Hiroshi Nomura, Nobuaki Aoki, Takamitsu Sasaki 2002-04-09
6369962 Zoom lens barrel Hiroshi Nomura, Nobuaki Aoki, Takamitsu Sasaki 2002-04-09
6335834 Barrel having cam groove and helicoid Hiroshi Nomura 2002-01-01
6269227 Lens hood Takuji Hamasaki, Hiroaki Suzuki, Makoto Iikawa, Kazuhiro Hattori 2001-07-31
6130788 Structure for holding lens Hiroshi Nomura 2000-10-10
6115189 Multi-stage extension type zoom lens barrel Hiroshi Nomura, Kazuyoshi Azegami, Takamitsu Sasaki 2000-09-05
6104550 Control method for zoom lens camera and zoom lens camera Kazuyoshi Azegami, Takamitsu Sasaki 2000-08-15
6055116 Multi-stage extension type zoom lens barrel Hiroshi Nomura, Kazuyoshi Azegami, Takamitsu Sasaki 2000-04-25
6014269 Engaging structure of relatively-rotatable cylindrical members Hiroshi Nomura, Kazuyoshi Azegami, Takamitsu Sasaki 2000-01-11
5995764 Brush mounting structure for encoder and focal length detection mechanism in a zoom lens barrel Kazuyoshi Azegami, Takamitsu Sasaki, Hiroshi Nomura 1999-11-30
5956189 Linear guiding mechanism of a zoom lens barrel Kazuyoshi Azegami, Takamitsu Sasaki 1999-09-21
5950019 Zoom lens camera Kazuyoshi Azegami, Takamitsu Sasaki 1999-09-07